Arrangement at hubs for turbine, pump, or propeller wheels with turnable vanes



Sept. 30 192 4.

J. E. ENGLESSON ARRANGEMENT AT HUBS FOR TURBI PUM OR PROPELLER WHEELS WITH NA VA Filed Mar 14. 1923 3 Sheets-Sheet 1 {IEHN ELOv Encmesso INVENTOR;

. Attorney.

Sept. 30 1924. 1,510,086

J. E. ENGLESSON ARRANGEMENT AT HUBS FOR TURBINE, PUMP, OR PROPELLER WHEELS WITH TURNABLE VANES Filed March 14, 1923 3 Sheets-Sheet 2 Jorm ELOV ENeLEssoN 1N ENTQ L Attorney,

Sept. 30 1924.

J. E. ENGLESSON ARRANGEMENT AT HUBS FOR TURBINE, PUMP, OR PR OPELLER WHEELS WITH TURNABLE VANES Filed March 14, 1923 a Sheet$-$heet 5 JAN? ELOV ENGLESSON INVENTOR;

' Attorney.

Patented Sept. 30, 1924.

UNITED STATES PATENT OFFICE.

JOHN ELOV ENGLESSON, F KEISTINEHA 'MTI, SWEDEN.

ARRANGEMENT AT HUBS FOR TURBINE, JPUMP, OR PROPELLER WHEELS WITH TURNAIBLE YANES.

Application filed March 14, 1923.

To all whom it may concern:

Be it known that 1, JOHN ELov ENGLES- soN, engineer, residing at Kristinehamn,

' the same time the work required to turn the vanes about their bearings should be reduced toa minimum, and also for the sake of mechanical efliciency the bearings should not be of excessively heavy design.

My design has these desirable characteristics. The vane is pivoted upon a journal or pivot of relatively small diameter and is t-urnable about the axis of this pivot. At the same time the outer extremities of the vane base are supported upon an annular ring bearing. Inasmuch as the bearing is so designed that the pivot takes up only stresses at right angles to its axis, this pivot may be made of very small diameter and because of this the friction is reduced greatly and the work required to turn the vane about the pivot axis is very small. time the base of the vane is made relatively very broad and its extremities are sup ported upon the separate ring bearing atxa relatively large distance from the axis of rotation, i. e., the center of the pivot One embodiment of my invention is shown in the accompanying drawings inwhich Fig. 1 is a longitudinal sectional view and Fig. 2 is a cross sectional view through the middle'of the hub of Fig. 1. Fig. 3 is a longitudinal sectional view of another form of my invention.

Referring to Figs. 1 and 2, a hollow hub body 1 is supported on a hollow main shaft 1 in which there is a connecting rod 3. This rod is movable longitudinally in bearings 4 and 5 formed by the body 1, and such longitudinal movement imparts the turning'motion to the vanes as will be described hereinafter.

Each ofvanes 7 is supported by two bearpivot alone.

At the same Serial No. 624,937.

ings. One is a journal or pivot 9 which is integral with the hub body and about whose axis the vane is turnable. The other is a ring bearing 10, separate and distinct from pivot 9. This ring may be fastened either to the hub as shown at 12 and be movable in a groove 2 in the vane base, or it may be fastened to the latter and move in a corresponding channel in the hub body. A

suitable packing ring 13 is fitted around the vane base.

A flange 6 on the connecting rod 3 engages a spider 8 so that movement up and down of rod 3 imparts a similar motion to the spider 8. ries agroove 15 which engages a small journal 17 on the vane base through a loose sleeve 16 fitted around journal 17".

To turn the vanes, the spider 8 is moved For each vane, the spider carup or down by means of rod. 3 and carries with it the journals 17', Pivots 9 being fixed, the vanes will turn around the axes of these pivots.

A special feature of my design are" clearance spaces 11 (between the inside surfaces of rings 10 andthe bases of the corresponding grooves 2), and 11 (between the butt ends of pivots 9 and thebases of their bearings in the vanes). The space at 11 insures the taking up of all forces in a direction perpendicular to the axis of pivot 9 by the The space at the end of the latter allows all forces parallel to the axis of. pivot 9 to be taken up by the bearing surface of ring 10. These latter forces are due to be taken care of by the ordinary running fit of the vane on this pivot, and by placing the bearing 10 at a relatively very large distance from the center of the pivot, substantially all forces parallel to the axis of pivot 9 will be borne by this hearing 10. The smallness of ivot 9 reduces the work required to turn t e vanes; the breadth of the vane base and its support at its extremities by ring bearing 10 assures a firm and staunch anchorage of the vane.

The lubrication of the vane bearings is accomplished by forcing oil undebropressure through channels 14 in the hub' y 1.

In the embodiment illustrated in Fig. 3 the pivot 9 is made spherical in shape. The

center of the sphere must of course lie in the lane of the ring bearing 10.

at I claim is: p

l. in a propeller, the combination with a hub and vanes rotatably mounted therein, of a central pivot for each vane and an annular bearing member engaged by the vane, said bearing member being adapted to resist only forces parallel to the axis of said pivot.

2. In a propeller, the combination with a hub and vane rotatably mounted therein, of an annular bearing member for each vane and a central. pivot designed as an axis for the turning of said vanes and adapted to re sist only forces perpendicular to the axis of said pivot.

' 3. In a propeller, the combination of a hub, vanes rotatably mounted therein, a central pivot for each vane, and an annular bearing member engaged by the vane to per- ;mit only transverse play of the latter with respectto the pivot.

- 4. In a propeller, the combination of a hub, vanes notatably mounted therein, an annular bearing member for each vane, and a pivot disposed axially of the vane to permit only axial play of the latter with respect to the bearing member.

5. A rotary Vane having-its bearing in the periphery, and means coaxially disposed with respect to the vane to only prevent transverse play thereof, whereby all forces directed against the vanes other than those being in a transverse direction with respect to the turning axis ,of the vanes are resisted by the peripheral bearing.

6.' In a propeller, the combination of a hub, vanes rotatably mounted therein, and bearing means for the vanes comprising laterally grooved flanges, an annular bearing ring for said grooveand capable of permit ting transversely directed play in said vane, a centrally disposed pivot, and a bearing sleeve adapted to bear about the pivot and to have play in an axial direction with respect to the axis of the vane.

7. A propeller vane having a central pivot, and a peripheral bearing means comprising an annular member adapted to resist axial displacement of the vane, said resistance be ing brought about by the surface of the annular member being a greater distance from the center of rotation of the vane than the bearing surface of the pivot. I

8. A propeller vane having a central pivot, and a peripheral bearing means comprising an annular member adapted to resist axial displacement of the vane, said resistance being transmitted directly to the vane without affecting the pivot, the said resistance, being brought about by the bearing surface of the annular member being a greater distance from the center of rotation of the vane than the bearing surface of the pivot.

9. A hearing for rotatably mounted ropeller vanes, comprising a ring embrac by the hub of the vane at its periphery, the inner diameter of the ring being greater than the diameter of the adjacent wall of the vane, and a pivot pin disposed centrally of the vane and adapted to extend to a point short of the end of the opening in which it is mounted. e

10. In a propeller, the combination of a hub, blades rotatably mounted therein, and bearing means for the blades, comprising a central member and a peripheral member, each member having its bearings arranged in the body of the hub itself and being adapted to permit play of the blade should the other member be absent. 1

11. In impellers for water turbines the combination with a hub and vanes rotatably mounted therein ofa central pivot for each vane and an annulafbearing member engaged by the vane both bearings being arranged in the body of the hub itself annular bearing member being adapted to resist only forces parallel to the axis of said pivot.

12. In impellers for water turbines the combination with a hub and vanes rotatably mounted therein, of an annular bearing member for each vane and a central pivot designed as an axis for the turning of said vanes both bearings being arranged in the body of the hub itself and said pivot being adapted to iesist only forces perpendicular to the axis of the same.

13. In impellers for water turbines the combination with a hub and vanes rotatably mounted therein, of a central pivot for each vane and an annular bearing member engaged by the vane said annular bearing memher being adapted to resist only forces parallel to the axis of said pivot.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN ELOV ENGLESSON.

Witnesses ERNST NORDLINDH, HA NS PETTERSSON. 

